package cn.edu.scau.cmi.zhangsan.client;

public class InterProgrammingClient {
	public static void main(String args[]){
		
		Business business1 = new Business();
		business1.setAnimal(new Dog());
		business1.sing();
		
		Business business2 = new Business();
		business2.setAnimal(new Tiger());
		business2.sing();
	}
}
